Animals 125 Humans Mice animal experiment article nonhuman mouse 120 controlled study 118 animal model 100 priority journal 99 human 85 animal cell 77 Female 70 protein expression 66 female 65 human cell 57 animal tissue 55 unclassified drug 42 Mice, Inbred BALB C 39 male 36 Male 35 in vivo study 35 animal 33 cell proliferation 32 Cell Line, Tumor 31 Mus 30 in vitro study 29 metabolism 29 Mice, Inbred C57BL 25 Cell Proliferation 24